body {
  background-color: black;
  font-family: 'Helvetica';
}
h2 {
  font-size: 18px;
  padding: 10px 20px;
  color: #ffffff;
}
#chat-app {
  text-align: center;
  max-width: 600px;
  background-color: #141414;
  margin: 30px auto;
}
#chat-window {
  height: 400px;
  overflow: auto;
  background: #f9f9f9;
}
#output p {
  padding: 14px 0px;
  margin: 0 20px;
  border-bottom: 1px solid #e9e9e9;
  color: #555;
}
#feedback p {
  color: #aaa;
  padding: 14px 0px;
  margin: 0 20px;
}
#output strong {
  color: #000;
}
label {
  box-sizing: border-box;
  display: block;
  padding: 10px 20px;
}

input {
  padding: 20px;
  box-sizing: border-box;
  background: #eee;
  display: block;
  width: 100%;
  background: rgb(255, 253, 253);
  font-family: Nunito;
  font-size: 16px;
}

button {
  background: #141414;
  color: #fff;
  font-size: 18px;
  padding: 12px 0;
  width: 100%;
}
